Attachment for woodworking-lathes



(No Model.) w 2 sheets-'snee't 1,

J. G. HALLSTROM.

ATTACHMENT FOR WOODWORK ING LATHES.

No. 569,197. Patented Oct. 13, 1896.

WITNESSES IJVVEJV'TOR THE mans mans no FHOTO-LITHQ. wumm'rcm. we.

(No-Model.) 2 sheets-Shveet2;

. J. G. HALLSTROM= ATTACHMENT FOR WOODWORKING LATHBS. No. 569,197.PatentedOct. 13, 1896;

WITNESSES INVENTOR V I ia'flfim-ney UNITED STATES PATENT OFFICE.

ATTACHMENT FOR WOODWORKlNG-LATH ES.

SPECIFICATION forming part of Letters Patent No. 569,197, dated October13, 1896. Application filed May 5, 1896. Serial No. 590,281 (No model.)

To ctZZ whom it may concern:

Be it known that I, JOHN G. HALLSTROM, a citizen of the United States,residing at J amestown, in the county of Chautauqua and State of NewYork, have invented certain new and useful Improvements in Wood Turning-Lathe Rests, of which the following is a specification, reference beinghad therein to the accompanying drawings.

My invention relates to certain new and useful improvements inattachments for woodworking-lathes which are designed for various kindsof work and in which the various knives or cutters may be accuratelyadjusted and maintained in perfect position during the time the machineis in operation, and the attachment caused to slide longitudinally, bymeans of handle-pieces on the same, so that the cutter or cuttersmay-operate upon the stick with uniformity and precision throughout itslength.

My invention consists, essentially, of a member secured to the frame ofthe lathe and I provided with a groove at one side only of the axialline of the work and a combined rest and tool-holder having a member toengage and slide in said groove, whereby the attachment may be manuallyslid longitudinally along the frame of the lathe and the knife or cutteradjusted with accuracy with relation to the object to be acted upon.

My invention also consists of the parts and the constructions andcombinations of parts which I shall hereinafter fully describe andspecifically claim.

Referring to the accompanying drawings, in which corresponding lettersof reference indicate like parts, Figure 1 represents a perspective viewof a lathe attachment and its adjuncts constructed to embody myinvention. Fig. 2 is a front elevation of the same. Fig. 3 is across-sectional view on the line 00 w of Fig. 2. Figs. 4, 5, and 6illustrate modifications to be hereinafter referred to.

In the present instance I have omitted to show the frame of the latheandits usual head-stock, tail-stock, &c., and have simply illustrated myimproved attachment as detached from the lathe, it being understood thatsaid attachment is capable of use on most, if not all, of the types ofwoodworkinglathes now in general use.

To some convenient part of the frame of the lathe and extendinglongitudinally along the same and being fixedly secured to or anintegral part thereof, if desired, is a bar or member A, of metal,having in its under side and extending the whole or the major portion ofthe bar a groove B, preferably of dovetail form in cross-section, asshown in Figs. 1 and 3. Within this groove, which is located upon oneside only of the axial line of the work, is fitted and adapted to movethe slide 0, from which arms I) extend and have their outer ends formedwith bearings for a shaft or rod 6 5 D, which extends parallel with theslide and essentially in the horizontal plane thereof. Upon this rod theknife-holders E are hung so that they may swing about the same, saidholders being of any desired number and form and adapted to securely andadj ustably hold the knives or cutters in any well-known and appropriatemanner. In the present instance in Figs. 1 and 2 I have illustrated fiveof the holders, two of which are provided with knives or cutters; but itwill be understood that any number and design of holders and cutters maybe carried by the sliding ate tachment herein shown, and each knife orcutter may have its own handle extended upwardly, or there may be ahandle-piece F fixedly secured to the attachment or to one of theholders for the purpose of furnishing a convenient means for manuallymoving the attachment and its adjuncts longitudinally along the machineessentially on the same principle as a feed-screw. operates upon therests or stocks of both metal and wood work-' ing lathes.

To the rear side of the grooved bar or mem- 9o ber in which the rest andtool-holders are fitted are bolted angle-plates G, and to the lowerhorizontal members of the same is secured a pattern H of any desiredform, said pattern being provided with slots a, in which 5 engageset-screws b, which adj ustably secure the pattern in position.

In Fig. 1 the holder which, carries one of the knives or cutters hassecured to its under side a plate 0, to which is adjustably secured redby set-screws a second plate d, with a downturned arm d adapted to runin contact'with' a. the formative edge of the pattern, as shown, '1whereby the holder to which these plates are secured will beautomatically raised and lowered as the downturned arm (Z travels incontact with the elevations and depressions of the pattern. Each of thedevices thus far described, except the pattern and the means forsecuring it, is mounted on and is to be moved with the attachment, theslide whereof operates freely in the groove in the bar or member A, asbefore described. The angleplates G, which secure the pattern to thegrooved bar A, are also formed with slots 6, which are engaged byset-screws or bolts 6, whereby the distance between the bar A and thepattern and the relative positions of these parts may be adjusted as thecircumstances require.

In Figs. 4, 5, and 6 an essential portion of my invention is shown inconnection with'a knife or cutter for forming a rosette. In theseinstances the grooved bar A receives the head of the slide 0", the saidslide having a rigid knife-holder at or near its outer end and providedwith one or more set-screws for adjustably holding the rosette'knife orcutter Iof suitable form and construction. In these figures, aswvell asin Figs. 1, 2, and 3, the slide which carries, the knives or cutters andtheir adjuncts are maintained'in perfect position and areaccuratelyguided by the sliding engagement of the slide in the groove of the bar Aor A. This attachment'of the slide and the free sliding movement it ispermitted to have in the groove of' the bar and manipulation of thecutting appliances and renders the work of the cutters a matter ofeaseand certainty. By thedevices and arrangements'described I amenabled'to turn a piece of wood anywhere from one-quarter of an inch totwo and one-quarter inches in diameter, after the'knives are onceadjusted, without stopping the machinery or altering the positions oralinement of the knives, while the iron pattern shown in Figs. 1, 2, and3, and the engagement therewith of the downturned extension of theadjustable plate d, gives to the knife or cutter with which it isconnected such a-precise direction as is difficult to obtain by hand inthe usual manner. By simply raising the handle the knife or cutter maybemade to cut into the block of wood as shown in Fig. 2, this beingbecause of its fixed position in the slide and the latters attachmentand slidable action in the groove of the bar or member A. This groovedmember also serves as an accurate guide for the rod D upon which theknife-holders are pivotally hung, thereby maintaining the knives inproper position for best service, and this same groove in the .bar ormember A provides-an easy, safe, inexpensive, and natural guide for thepositions of the knives and all the tools used in turning apiece of woodcombining the automatic method and the use of the hands.

Having thus described my invention, what I claim as new, and desire tosecure'by Letters Patent, is

1. A lathe attachment to be manually operated and comprising a groovedbar at one side only of the axial line of the work, a slide mounted insaid groove and having a head extending along the same, a knife-holderex tending laterally from the slide and a knife in said holder, saidslide and holder being so connected that they may be jointly and freelymoved along the grooved bar, by hand, so that their relative positionsmay be maintained.

2. In a latheattachment designed to be operated by hand, thecombination, with a fixed grooved bar or member upon one side only ofthe axial line of the work, of a rest comprising a slide to engage andto be moved, by

hand, along said grooved bar or member, and

having laterallyprojecting arms provided with bearings in their outerends, a shaft carried in said bearingsand maintained parallel with saidgroove, and a centrally-hung;-

knife-holder pivot'allymount'ed on said 'rod and adapted to receive aknife or cutter.

3. In a lathe attachment adapted to perform various kinds of work, thefixed grooved bar or member at one side only of the axial line of thework, in combination with a rest comprising a slide having a head toengage and operate along-said groove, and providedwithoutwardly-extendingarms, a shaft parallel with the groove and having itsopposite portions mounted in bearingsin the outer ex} tremities of saidarms, knife-holders pivotally hung upon said 'shaft and having the outerends adapted to receive knives or cut ters, and a handle'on therest'whercby latter and its attachments may be manually.

adjusted along the groovedbar to causeits member having a grooveextending longitudinally alongit at one side only of the axial line ofthework, in combination with a rest adapted to be manually operated andhaving a slide to engage and operate within said groove, a rod mountedin the rest parallel with the groove, a pattern removably andad justablysecured below the grooved bar or member, a holder adapted to swing uponthe rod, and provided with a knife or cutter, and

a plate adj ustably fitted to the under side of the holder, having adownturned extension to engage the pattern whereby the holder isautomatically raised and lowered during the movement of the rest alongthe groovedgbar or member.

5. In a lathe attachment adapted to per form various kinds of work, thecombination,

of-a fixed grooved bar or member on oneside only of the axial line ofthe work, a rest to be manually operated and having a slide to 0p:-erate in said groove, and having-horizontal arms projecting laterallyfrom the under side of the bar, and provided with bearings, a ably heldand supported from the bar or shaft or rod mounted in said bearingsparallel -member. 10

with the groove of the bar or member, knife- In testimony whereof Iaffix my signature holders hung upon said shaft or rod, knives inpresence of two Witnesses. or cutters adapted to be adj ustably mountedJOHN G. HALLSTROM. in the holders, a pattern below the groovedWitnesses: bar or member and the angular plates and se- OLOF A. OLSON,curing means whereby the pattern is adj ust- CARL W. ALLBERG.

